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Millimeter-wave folded reflector antennas with high gain, low loss, and low profile

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3 Author(s)
W. Menzel ; Microwave Techniques, Ulm Univ., Germany ; D. Pilz ; M. Al-Tikriti

Periodic and quasi-periodic structures, printed on a dielectric substrate, can be employed to control the reflection and transmission properties of incident waves as a function of structure geometry. Local variations of the element geometry on a substrate with backside metallization - resulting in respective variations of the reflection phase angle - can be used to design printed reflectarray antennas. The dual-polarization properties of such antennas, together with polarizing grids or slot arrays, can be exploited for the realization of compact, low-profile folded reflector antennas. Examples of some antennas of this type are presented, covering the 60 GHz range for communication and ISM applications, and 76 to 77 GHz for automotive radars.

Published in:

IEEE Antennas and Propagation Magazine  (Volume:44 ,  Issue: 3 )